# Forces and pressure

Get Started. It's Free
Forces and pressure

## 8. Important Forces in our everyday life

### 8.1. Frictional Force

8.1.1. Frictional force is produced when the surface of one object coming into contact with the surface of another object

8.1.2. Frictional Force is very important in our life as it enables us the walk easily on earth.

8.1.3. Frictional Force can also be dangerous as when two surfaces are rubbed together, heat is usually generated.

8.1.4. The useful effects of friction is that it enable us to walk, hold things.

8.1.5. The negative effects of friction is that car tyres got wore out, shoes get worn out and there would be wear and tear in machines.

8.1.6. Ways to reduce friction: -Using lubricant -Using ball bearings -Smoothing the surface by polishing -Streamlining

### 8.2. Magnetic Force

8.2.1. Magnetic Force is a force exerted by a magnet.

8.2.2. An example of objects which make use of magnetic force is the crane as it uses a powerful magnet to lift iron and steel objects.

8.2.3. A magnet can also exert a force on another magnet. Example: The like poles of the magnet repel each other while the unlike poles of the magnet attracts each other. So by doing that, they are exerting a force.

### 8.3. Gravitational Force

8.3.1. Gravitational Force (a.k.a. Gravity Force) is a force that pulls objects towards the Earth. It can exists between any two objects.

8.3.2. Gravitational Force is one of the main reason we are standing and not floating up in the space.